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    • 75. 发明公开
    • 메타크릴산 또는 메타크릴산 에스테르의 제조 방법
    • 一种制备甲基丙烯酸或甲基丙烯酸酯的方法
    • KR1020100031525A
    • 2010-03-22
    • KR1020097027464
    • 2008-05-30
    • 에보니크 룀 게엠베하
    • 막스,아힘푀터,마르쿠스부히홀츠,스테판마이,알렉산더지게르트,헤르만알베르,비르기트푸흐스,게오르크에겔링,로타르
    • C12N1/21C12P7/62C07C69/54C08F220/06
    • C12P7/40C07C51/377C12N9/001C12P7/42C12P7/52C12P7/625C07C57/04
    • The present invention relates to a process for preparing methacrylic acid or methacrylic esters, comprising the process steps of IA) preparing 3-hydroxyisobutyric acid by a process comprising the process step of contacting a cell which has been genetically modified with respect to its wild type such that, in comparison to its wild type, it is capable of forming more 3-hydroxyisobutyric acid or polyhydroxyalkanoates based on 3-hydroxyisobutyric acid, with a nutrient medium comprising, as the carbon source, carbohydrates, glycerol, carbon dioxide, methanol, L-valine or L-glutamate, under conditions under which 3-hydroxyisobutyric acid or polyhydroxyalkanoates based on 3-hydroxyisobutyric acid are formed from the carbon source, if appropriate purifying the 3-hydroxyisobutyric acid to free it of the nutrient medium and if appropriate neutralizing the 3-hydroxyisobutyric acid, IB) dehydrating the 3-hydroxyisobutyric acid to form methacrylic acid and if appropriate esterifying methacrylic acid. The invention also relates to a process for preparing polymethacrylic acid or polymethacrylic esters.
    • 本发明涉及一种制备甲基丙烯酸或甲基丙烯酸酯的方法,其包括以下工艺步骤:IA)通过包括以下步骤的方法制备3-羟基异丁酸,所述方法包括将经遗传修饰的细胞与其野生型接触, 与其野生型相比,它能够形成更多的3-羟基异丁酸或基于3-羟基异丁酸的聚羟基链烷酸酯,其营养培养基包含作为碳源的碳水化合物,甘油,二氧化碳,甲醇, 缬氨酸或L-谷氨酸盐,在由碳源形成3-羟基异丁酸或基于3-羟基异丁酸的聚羟基链烷酸酯的条件下,如果合适地纯化3-羟基异丁酸以释放营养培养基,并且如果适当地中和3 - 羟基异丁酸,IB)使3-羟基异丁酸脱水形成甲基丙烯酸,如果合适的话,将甲基丙烯酸 ID。 本发明还涉及一种制备聚甲基丙烯酸或聚甲基丙烯酸酯的方法。